On shabbat for shacharit and mussaf, I am usually still davening shmoneh esre by the time the chazzan gets to kedusha. In this situation, can I hum to the tune of kedusha?
This essentially boils down ...

Is it considered a hefsek to play with one's fingers or silverware or such while waiting for the challah to be passed around on shabbat, after the blessing made on it? Even though it isn't talking, it ...

This happens to me a lot on Mondays and Thursdays: I'm just putting down my head to finish Tachanun when the baal tefilah says kaddish, the aron is opened and the Torah is taken out. Do I stop what ...

Am I allowed to interrupt in the middle of Shmona esrei in order to pick up a Siddur (or any other holy book) that has fallen to the floor? Same question, if I have to make some steps in order to pick ...

Recently I saw in Halacha that it is inappropriate to have the sermon right before Kaddish of Musaf as it is considered a Hefsek. Yet many Shuls do just that and have the sermon right before Kaddish ...

If you wash netilat yadayim and then a non-Jew says "hello" to you, should you:
say "hello" back and wash again?
try to acknowledge him without actually talking?
or ignore him (doesn't seem right)?
...

I have been to weddings where, during the recitation of the seventh bracha under the chuppah, the congregation sings "asher bara...". Sometimes it is along with the one reciting the bracha and other ...

If there are exactly 10 people in a minyan and one or more are forbidden from answering kaddish at that moment, is kaddish allowed to be recited? Examples of such a situation may include if someone is ...

Assuming one has the minhag not to speak between netilas yadayim and hamotzi...What should one do if one accidentally speaks during this time?
Should one wash again? With or without a blessing?
--Or ...

Why does everybody (at least that I have ever seen), say "borei pri hagefen" first of all during havdallah, but not drink the wine until all of the other brachos have been said? Is saying the other ...

I have been in situations where most everyone follows the common minhag of washing after kiddush before hamotzi, whereas, unless it is minhag avot for my host, I wash beforehand. '
This has prompted ...

My friend and I are in the middle of davening Shmoneh Esreh. Rather than talk, I text him, "I don't remember if today is Rosh Hodesh. Do we say 'Ya'aleh V'yavo?'" Can I interrupt my friend for this ...

If the one reading from the Torah (whether it be on Mondays, Thursday, Shabbos, etc) has to say the bracha of "Ha-Gommel" when should it be recited? Is it ok to say it after the last aliyah before he ...

Does Baruch HaShem Le'Olam have the same Din as Birchoth Keriath Shema' in terms of interruption?
If you are in the middle of the Berachah, do you respond to the same things as you would if you were ...